Cliff's Crab Shack
If you got crabs there are only two solutions, one is the Doctor and the other is this Cliff's Crab Shack fly box. Perfect for hanging on the flats lightweight style and big enough to carry the options you want.
Obviously not just for crabs.... at a generous 15.5cm x 10xm and a 4.2 cm thick, this box will still fit in your pocket and handle Dahlbergs, poppers, Geet Flies or a bus load of Bonefish flies.
Like all Cliff boxes, it has that beautiful blue slit foam that last for a long bloody time.